Over the next few months, Cassini will dive into the space between Saturn and its rings, moving closer and closer to the planet until it eventually disintegrates in its atmosphere in September. Cassini is one of the most successful missions to the solar system. It delivered a probe to the surface of Titan, and discovered its lakes of liquid methane. It observed plumes of water vapor shooting out of Enceladus. And, of course, it captured stunning photos of Saturn and its rings. Its demise will elicit sadness among scientists, engineers, and space enthusiasts alike.